Results 101 to 110 of about 90,878 (176)

Lightning mapping system [PDF]

open access: yes
A Lightning Detection and Ranging (LDAR) System is being implemented at KSC in Florida. The first operational use is expected in the late summer of 1991.
Lennon, C., Maier, L.
core   +1 more source

Multi Detector Fusion of Dynamic TOA Estimation using Kalman Filter

open access: yes, 2015
In this paper, we propose fusion of dynamic TOA (time of arrival) from multiple non-coherent detectors like energy detectors operating at sub-Nyquist rate through Kalman filtering.
Dwivedi, Satyam   +2 more
core   +1 more source

A Cloud Screening Preprocessing Framework for GOCI‐II Aerosol Optical Depth: Development and Impact on Retrieval Errors

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 1, 16 January 2026.
Abstract Accurate retrieval of satellite‐derived aerosol optical depth (AOD) is critical for air quality forecasting, especially when AOD is assimilated into models. However, if retrieval errors in the satellite‐derived AOD are not corrected or characterized, they can lead to false analysis increments and ultimately degrade the quality of data ...
Joonhee Kim   +6 more
wiley   +1 more source

Research on indoor positioning system algorithm based on UWB technology

open access: yesMeasurement: Sensors
Ultra wideband (UWB) indoor positioning technology is attracting significant attention in the present realm of indoor wireless positioning technology due to its numerous advantages, including low energy consumption, exceptional wireless transmission ...
Weimin Ma   +3 more
doaj   +1 more source

Distributed Cooperative Localization in Wireless Sensor Networks without NLOS Identification [PDF]

open access: yes, 2014
In this paper, a 2-stage robust distributed algorithm is proposed for cooperative sensor network localization using time of arrival (TOA) data without identification of non-line of sight (NLOS) links.
Champagne, Benoit   +2 more
core  

Radio-location of mobile stations in third generation networks

open access: yesVojnotehnički Glasnik, 2013
Mobile station localization in mobile networks started with simple methods (e.g. Cell-ID method) which required only slight modifications of network infrastructures.
Milan Manojle Šunjevarić   +2 more
doaj   +1 more source

Geometrical statistical channel model with an Inverted-Parabolic spatial distribution

open access: yesTongxin xuebao, 2014
Due to the complexity of calculation for the parameters of angle of arrival(AOA),time of arrival(TOA) and Dopplerspectra(DS),etc.,a proper geometrical statistical channel model was proposed with inverted-parabolic spatial distribution around mobile ...
Jie ZHOU, Dong-dong XU, Kikuchi HISAKAZU
doaj   +2 more sources

Fingerprint localization based on hybrid TOA, AOA, and RSS measurements

open access: yesDiscover Applied Sciences
This paper presents a novel joint TOA-AOA-RSS fingerprint localization method aimed at reducing the necessity for collecting extensive fingerprint data for database construction.
Shuiwei Liu, Lei Tang, Zhangsheng Wang
doaj   +1 more source

An indoor positioning system based on distributed LTE network

open access: yesDianxin kexue, 2018
Indoor positioning technology has important applications in the business and security fields,but there are still existing problems with low positioning accuracy and high deployment costs.An indoor positioning system based on long term evolution ( LTE ...
Yu YANG, Ming CHEN, Daqing LIU
doaj   +2 more sources

Time of Arrival (TOA) Based Radiolocation Architecture in CDMA Systems and Its Performance Analysis

open access: yesInternational Journal of Computer and Communication Engineering, 2018
Abir Ahmed   +3 more
openaire   +1 more source

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